Dental and skeletal components of Class II open bite treatment with a modified Thurow appliance
INTRODUCTION: Due to the lack of studies that distinguish between dentoalveolar and basal changes caused by the Thurow appliance, this clinical study, carried out by the School of Dentistry - State University of São Paulo/Araraquara, aimed at assessing the dental and skeletal changes induced by mod...
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| Format: | Article |
| Language: | English |
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Dental Press Editora
2014-01-01
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| Series: | Dental Press Journal of Orthodontics |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512014000100019&lng=en&tlng=en |
| _version_ | 1818938562989522944 |
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| author | Helder Baldi Jacob Ary dos Santos-Pinto Peter H. Buschang |
| author_facet | Helder Baldi Jacob Ary dos Santos-Pinto Peter H. Buschang |
| author_sort | Helder Baldi Jacob |
| collection | DOAJ |
| description | INTRODUCTION: Due to the lack of studies that distinguish between dentoalveolar and basal changes caused by the Thurow appliance, this clinical study, carried out by the School of Dentistry - State University of São Paulo/Araraquara, aimed at assessing the dental and skeletal changes induced by modified Thurow appliance. METHODS: The sample included an experimental group comprising 13 subjects aged between 7 and 10 years old, with Class II malocclusion and anterior open bite, and a control group comprising 22 subjects similar in age, sex and mandibular plane angle. Maxillary/mandibular, horizontal/vertical, dental/skeletal movements (ANS, PNS, U1, U6, Co, Go, Pog, L1, L6) were assessed, based on 14 landmarks, 8 angles (S-N-ANS, SNA, PPA, S-N-Pog, SNB, MPA, PP/MPA, ANB) and 3 linear measures (N-Me, ANS-Me, S-Go). RESULTS: Treatment caused significantly greater angle decrease between the palatal and the mandibular plane of the experimental group, primarily due to an increase in the palatal plane angle. ANB, SNA and S-N-ANS angles significantly decreased more in patients from the experimental group. PNS was superiorly remodeled. Lower face height (ANS-Me) decreased in the experimental group and increased in the control group. CONCLUSIONS: The modified Thurow appliance controlled vertical and horizontal displacements of the maxilla, rotated the maxilla and improved open bite malocclusion, decreasing lower facial height. |
| first_indexed | 2024-12-20T06:09:50Z |
| format | Article |
| id | doaj.art-8427f088e66a4200a192495183a4b06a |
| institution | Directory Open Access Journal |
| issn | 2177-6709 |
| language | English |
| last_indexed | 2024-12-20T06:09:50Z |
| publishDate | 2014-01-01 |
| publisher | Dental Press Editora |
| record_format | Article |
| series | Dental Press Journal of Orthodontics |
| spelling | doaj.art-8427f088e66a4200a192495183a4b06a2022-12-21T19:50:42ZengDental Press EditoraDental Press Journal of Orthodontics2177-67092014-01-01191192510.1590/2176-9451.19.1.019-025.oarS2176-94512014000100019Dental and skeletal components of Class II open bite treatment with a modified Thurow applianceHelder Baldi JacobAry dos Santos-PintoPeter H. BuschangINTRODUCTION: Due to the lack of studies that distinguish between dentoalveolar and basal changes caused by the Thurow appliance, this clinical study, carried out by the School of Dentistry - State University of São Paulo/Araraquara, aimed at assessing the dental and skeletal changes induced by modified Thurow appliance. METHODS: The sample included an experimental group comprising 13 subjects aged between 7 and 10 years old, with Class II malocclusion and anterior open bite, and a control group comprising 22 subjects similar in age, sex and mandibular plane angle. Maxillary/mandibular, horizontal/vertical, dental/skeletal movements (ANS, PNS, U1, U6, Co, Go, Pog, L1, L6) were assessed, based on 14 landmarks, 8 angles (S-N-ANS, SNA, PPA, S-N-Pog, SNB, MPA, PP/MPA, ANB) and 3 linear measures (N-Me, ANS-Me, S-Go). RESULTS: Treatment caused significantly greater angle decrease between the palatal and the mandibular plane of the experimental group, primarily due to an increase in the palatal plane angle. ANB, SNA and S-N-ANS angles significantly decreased more in patients from the experimental group. PNS was superiorly remodeled. Lower face height (ANS-Me) decreased in the experimental group and increased in the control group. CONCLUSIONS: The modified Thurow appliance controlled vertical and horizontal displacements of the maxilla, rotated the maxilla and improved open bite malocclusion, decreasing lower facial height.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512014000100019&lng=en&tlng=enMá oclusão de Angle Classe IIMordida abertaOrtopedia |
| spellingShingle | Helder Baldi Jacob Ary dos Santos-Pinto Peter H. Buschang Dental and skeletal components of Class II open bite treatment with a modified Thurow appliance Dental Press Journal of Orthodontics Má oclusão de Angle Classe II Mordida aberta Ortopedia |
| title | Dental and skeletal components of Class II open bite treatment with a modified Thurow appliance |
| title_full | Dental and skeletal components of Class II open bite treatment with a modified Thurow appliance |
| title_fullStr | Dental and skeletal components of Class II open bite treatment with a modified Thurow appliance |
| title_full_unstemmed | Dental and skeletal components of Class II open bite treatment with a modified Thurow appliance |
| title_short | Dental and skeletal components of Class II open bite treatment with a modified Thurow appliance |
| title_sort | dental and skeletal components of class ii open bite treatment with a modified thurow appliance |
| topic | Má oclusão de Angle Classe II Mordida aberta Ortopedia |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2176-94512014000100019&lng=en&tlng=en |
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